1) Reimplement (differently) unlimited line length restricted in prev.
commit. 2) Honor missing the very last \n (if absent) on output.
This commit is contained in:
parent
4260c12796
commit
5eaad26eaf
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=204876
@ -53,6 +53,7 @@ static const char rcsid[] =
|
||||
#include <limits.h>
|
||||
#include <locale.h>
|
||||
#include <stdint.h>
|
||||
#define _WITH_GETLINE
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
@ -64,8 +65,8 @@ int cflag, dflag, uflag, iflag;
|
||||
int numchars, numfields, repeats;
|
||||
|
||||
FILE *file(const char *, const char *);
|
||||
wchar_t *convert(wchar_t *, const char *);
|
||||
char *getlinemax(char *, FILE *);
|
||||
wchar_t *convert(const char *);
|
||||
int inlcmp(const char *, const char *);
|
||||
void show(FILE *, const char *);
|
||||
wchar_t *skip(wchar_t *);
|
||||
void obsolete(char *[]);
|
||||
@ -74,9 +75,10 @@ static void usage(void);
|
||||
int
|
||||
main (int argc, char *argv[])
|
||||
{
|
||||
wchar_t *tprev, *tthis, *wprev, *wthis, *wp;
|
||||
wchar_t *tprev, *tthis;
|
||||
FILE *ifp, *ofp;
|
||||
int ch, comp;
|
||||
size_t prevbuflen, thisbuflen, b1;
|
||||
char *prevline, *thisline, *p;
|
||||
const char *ifn;
|
||||
|
||||
@ -133,29 +135,27 @@ main (int argc, char *argv[])
|
||||
if (argc > 1)
|
||||
ofp = file(argv[1], "w");
|
||||
|
||||
prevline = malloc(LINE_MAX);
|
||||
thisline = malloc(LINE_MAX);
|
||||
wprev = malloc(LINE_MAX * sizeof(*wprev));
|
||||
wthis = malloc(LINE_MAX * sizeof(*wthis));
|
||||
if (prevline == NULL || thisline == NULL ||
|
||||
wprev == NULL || wthis == NULL)
|
||||
err(1, "malloc");
|
||||
prevbuflen = thisbuflen = 0;
|
||||
prevline = thisline = NULL;
|
||||
|
||||
if ((prevline = getlinemax(prevline, ifp)) == NULL) {
|
||||
if (getline(&prevline, &prevbuflen, ifp) < 0) {
|
||||
if (ferror(ifp))
|
||||
err(1, "%s", ifn);
|
||||
exit(0);
|
||||
}
|
||||
tprev = convert(wprev, prevline);
|
||||
tprev = convert(prevline);
|
||||
|
||||
if (!cflag && uflag && dflag)
|
||||
show(ofp, prevline);
|
||||
|
||||
while ((thisline = getlinemax(thisline, ifp)) != NULL) {
|
||||
tthis = convert(wthis, thisline);
|
||||
tthis = NULL;
|
||||
while (getline(&thisline, &thisbuflen, ifp) >= 0) {
|
||||
if (tthis != NULL)
|
||||
free(tthis);
|
||||
tthis = convert(thisline);
|
||||
|
||||
if (tthis == NULL && tprev == NULL)
|
||||
comp = strcmp(thisline, prevline);
|
||||
comp = inlcmp(thisline, prevline);
|
||||
else if (tthis == NULL || tprev == NULL)
|
||||
comp = 1;
|
||||
else
|
||||
@ -166,14 +166,17 @@ main (int argc, char *argv[])
|
||||
if (cflag || !dflag || !uflag)
|
||||
show(ofp, prevline);
|
||||
p = prevline;
|
||||
wp = wprev;
|
||||
b1 = prevbuflen;
|
||||
prevline = thisline;
|
||||
wprev = wthis;
|
||||
prevbuflen = thisbuflen;
|
||||
if (tprev != NULL)
|
||||
free(tprev);
|
||||
tprev = tthis;
|
||||
if (!cflag && uflag && dflag)
|
||||
show(ofp, prevline);
|
||||
thisline = p;
|
||||
wthis = wp;
|
||||
thisbuflen = b1;
|
||||
tthis = NULL;
|
||||
repeats = 0;
|
||||
} else
|
||||
++repeats;
|
||||
@ -185,48 +188,56 @@ main (int argc, char *argv[])
|
||||
exit(0);
|
||||
}
|
||||
|
||||
char *
|
||||
getlinemax(char *buf, FILE *fp)
|
||||
{
|
||||
size_t bufpos;
|
||||
int ch;
|
||||
|
||||
bufpos = 0;
|
||||
while ((ch = getc(fp)) != EOF && ch != '\n') {
|
||||
buf[bufpos++] = ch;
|
||||
if (bufpos >= LINE_MAX)
|
||||
errx(1, "Maximum line length (%d) exceeded",
|
||||
LINE_MAX);
|
||||
}
|
||||
buf[bufpos] = '\0';
|
||||
|
||||
return (bufpos != 0 || ch == '\n' ? buf : NULL);
|
||||
}
|
||||
|
||||
wchar_t *
|
||||
convert(wchar_t *buf, const char *str)
|
||||
convert(const char *str)
|
||||
{
|
||||
size_t n;
|
||||
wchar_t *p, *ret;
|
||||
wchar_t *buf, *ret, *p;
|
||||
|
||||
if ((n = mbstowcs(buf, str, LINE_MAX)) == LINE_MAX)
|
||||
errx(1, "Maximum line length (%d) exceeded", LINE_MAX);
|
||||
else if (n != (size_t)-1) {
|
||||
/* If requested get the chosen fields + character offsets. */
|
||||
if (numfields || numchars)
|
||||
ret = skip(buf);
|
||||
else
|
||||
ret = buf;
|
||||
if (iflag) {
|
||||
for (p = ret; *p != L'\0'; p++)
|
||||
*p = towlower(*p);
|
||||
}
|
||||
if ((n = mbstowcs(NULL, str, 0)) == (size_t)-1)
|
||||
return (NULL);
|
||||
if ((buf = malloc((n + 1) * sizeof(*buf))) == NULL)
|
||||
err(1, "malloc");
|
||||
if (mbstowcs(buf, str, n + 1) != n)
|
||||
errx(1, "internal mbstowcs() error");
|
||||
/* The last line may not end with \n. */
|
||||
if (n > 0 && buf[n - 1] == L'\n')
|
||||
buf[n - 1] = L'\0';
|
||||
|
||||
/* If requested get the chosen fields + character offsets. */
|
||||
if (numfields || numchars) {
|
||||
if ((ret = wcsdup(skip(buf))) == NULL)
|
||||
err(1, "wcsdup");
|
||||
free(buf);
|
||||
} else
|
||||
ret = NULL;
|
||||
ret = buf;
|
||||
|
||||
if (iflag) {
|
||||
for (p = ret; *p != L'\0'; p++)
|
||||
*p = towlower(*p);
|
||||
}
|
||||
|
||||
return (ret);
|
||||
}
|
||||
|
||||
int
|
||||
inlcmp(const char *s1, const char *s2)
|
||||
{
|
||||
int c1, c2;
|
||||
|
||||
while (*s1 == *s2++)
|
||||
if (*s1++ == '\0')
|
||||
return (0);
|
||||
c1 = (unsigned char)*s1;
|
||||
c2 = (unsigned char)*(s2 - 1);
|
||||
/* The last line may not end with \n. */
|
||||
if (c1 == '\n')
|
||||
c1 = '\0';
|
||||
if (c2 == '\n')
|
||||
c2 = '\0';
|
||||
return (c1 - c2);
|
||||
}
|
||||
|
||||
/*
|
||||
* show --
|
||||
* Output a line depending on the flags and number of repetitions
|
||||
@ -237,9 +248,9 @@ show(FILE *ofp, const char *str)
|
||||
{
|
||||
|
||||
if (cflag)
|
||||
(void)fprintf(ofp, "%4d %s\n", repeats + 1, str);
|
||||
(void)fprintf(ofp, "%4d %s", repeats + 1, str);
|
||||
if ((dflag && repeats) || (uflag && !repeats))
|
||||
(void)fprintf(ofp, "%s\n", str);
|
||||
(void)fprintf(ofp, "%s", str);
|
||||
}
|
||||
|
||||
wchar_t *
|
||||
|
Loading…
Reference in New Issue
Block a user